Boxwood

Tropical Boxwood or Palmwood
Tropical box or palmwood is in fact a general term for woods with comparable
properties to the European boxwood.
The Coolsma workshop uses Castello for the Aura Conservatorium model.
Castello comes closest to the European boxwood in tonal quality.
It produces a full, warm and clear tone.
Some tropical boxwoods do cause allergic reactions. As far as we know
Castello doesn´t.